“You can’t just cover the pipes up,” Olms explained ... designed the Deco-Vent in 1989 to hide similarly ugly vent pipes used in septic systems in New England. Its patent is pending.

They think the purpose of the vent pipe is to expel sewer gas outside. While that does happen each time the wind blows across the top of the vent pipes, the real purpose is to provide replacement ...

Shoot your inquiries to the Ask Curbed SF Inbox. A recent post about property owners being held responsible for missing vent covers yields this question from a commenter: ...